Where can i buy sheets for dust mites and a plastic cover my bed?

maybe a spray to? yeahh.Where can i buy sheets for dust mites and a plastic cover my bed?
If you're thinking of the things that bite,those are bed bugs.Dust mites won't harm you.You can buy a zippered mattress pad at Wal-mart.The dust mites live off dead skin you shed,and they're not just in your mattress,they're in your couch/chairs,and carpet too.If you have a problem with bed bugs,you'll need to call an exterminator.Where can i buy sheets for dust mites and a plastic cover my bed?
Take insecticide spray from any supermarket. Spay it all over the bed, on the surface from a distance of 5 inches. Both sides of the bed and on the sides. Waste a whole can on it. Do this in the morning so that by the evening will not smell. This will keep anything away for a year.